It is known that social networks are not only for teenagers nowadays, it also concerns all kind of people; those social networks put people from every country together. What we do not necessarily know is that those social networks have a lot of consequences on different areas like personal finance for example. This impact on personal finance is so consequent that it started to alarms entrepreneurs, technology professionals etc. In fact, it seems that people tend to manage their finance on social network more than with their traditional centres. Social networks propose to their adherents applications that involve social lending and it has a huge success. Applications like the Lending Club or Zopa tend to be very famous and they deal with a lot of money. The fact that the number of this kind of social networks applications is rapidly growing is what alarmed persons with an interest in personal finance. Actually, they are right to take this seriously because those applications propose very interesting opportunities. As banks are more and more hard to convince when it comes to loans, people turn themselves to those social networking applications because they have attractive offers: the average rate of interest is even lower than the one that banks usually charge. Moreover, it is not only profitable for borrowers; it is also a good opportunity for lenders. A new way of managing personal finance is created and it brings people together since there are also forums where people help each other out with advices on how to improve their finances. As those applications become more and more famous, this change reveals that people do not entirely trust their bank institution anymore, they are more likely to take advices that do not come from professionals than taking advices from their own